Season One

1.01 Children Of The Gods Part 1

When the SGC is attacked by an alien with glowing eyes, Col. Jack O'Neill is recalled from retirement to lead a second team through to Abydos: his mission to retrieve Dr. Daniel Jackson. Daniel's discovery of a cartouche leads astrophysicist Capt. Carter to realize an entire network of Stargates could exist, leading to millions of worlds.

Season Two

2.01 The Serpent's Lair Part 2

Led by Apophis and Klorel, a fleet of Goa'uld warships launches a surprise attack on Earth. The SG-1 team uses the Stargate to board an incoming enemy ship with enough explosives to destroy the entire force. But the team's unexpected capture turns their objective into a suicide mission and when Daniel is fatally wounded, Jack is forced to leave him behind.

1.02 Children Of The Gods Part 2

When Sha're and Skaara are kidnapped, Jack returns with Daniel to Earth where a new team is formed to battle the alien threat: SG-1. They go through to another world, home to Apophis, an alien parasite like Ra. Sha're and Skaara are taken as hosts while the members of SG-1 are rescued by the most unlikely ally: Apophis' First Prime Teal'c.

2.02 In The Line Of Duty

On a daring mission to rescue victims of a Goa'uld attack, Sam Carter's body is taken over by a Goa'uld. When Carter and the SG-1 team return to Earth, an alien assassin follows to destroy the rebel Goa'uld, Jolinar of Malkshur, within Carter. Can Jack O'Neill eliminate the Goa'uld without killing her? Or will the assassin kill them both?

1.03 The Enemy Within

With the SGC under attack by Apophis, Maj. Kawalsky is forced to battle a larval Goa'uld for control of his mind. Daniel Jackson and Jack O'Neill attempt to communicate with the Goa'uld to no avail. It claims Kawalsky's body for its own. The major elects to undergo life-threatening surgery to remove the Goa'uld and appears to make a full recovery.

2.03 Prisoners

The SG-1 team inadvertently helps a desperate criminal and is charged as an accessory to murder. Sentenced to life imprisonment and banished to a desolate, brutal penal colony called Hadante, they strike a deal to escape with the aid of the powerful and enigmatic Linea, known to the other prisoners as Destroyer of Worlds.

1.04 Emancipation

On the planet of Simarka, where the fierce Mongolian race of Shavadai mistreat their oppressed females, Sam Carter is kidnapped and sold to a brutal warlord. When her escape attempt fails, Carter challenges the Shavidai's misogynous ways in a battle of wits and wills which may bring women equality or end in her own death.

2.04 The Game Keeper

Exploring a strange and beautiful garden in a distant world, the team members are trapped, knocked unconscious, and awakened to find themselves reliving the most pivotal, traumatic moments of their lives. A mysterious Keeper explains that it is all a virtual-reality type game. Forced to watch friends and family dying, SG-1 only wants to escape.

1.05 The Broca Divide

Returning from a planet with both a civilized and a primitive side, the SG-3 marines and all but two members of the SG-1 team become infected with a virus which rapidly spreads throughout the SGC. Violence breaks out everywhere as personnel regress to an aggressive primitive state. Can Teal'c and Daniel Jackson find the cause?

2.05 Need

Daniel Jackson saves the life of a beautiful princess, but his heroics cause the SG-1 team to be taken prisoner. When he is badly injured in their escape attempt, Princess Shyla uses the sarcophagus to addict Daniel in order to seduce him. As Daniel struggles to free his friends, his addiction and his romance with Shyla could doom them all.

1.06 The First Commandment

The SG-1 team is sent after an SG team which has failed to return from a mission. They find that their captain, Jonas Hanson, Sam Carter's ex-fiancé, having been treated as a god by the fearful, primitive locals, is drunk with power and tyrannizing them. Can Carter and the team overcome Hanson before he kills them all?

2.06 Thor's Chariot

Jack O'Neill and his team return to Cimmeria, where they had previously destroyed the planet's primary defense against the Goa'uld. When the planet is attacked by Heru'ur, O'Neill and Teal'c lead the people in a counter-strike while Daniel Jackson, Carter and Gairwyn search for the power of the fabled Thor's Chariot only to find Thor himself.

1.07 Cold Lazarus

A strange crystal strikes down O'Neill, replacing him with a double that returns with the SG-1 team to Earth to find the cause of O'Neill's private grief—his son's death. But the crystalline entity double is dangerously unstable as O'Neill's bewildered wife Sara soon discovers. Can O'Neill return to the SGC in time to save everyone and prevent chaos?

2.07 Message In A Bottle

A seemingly harmless orb is brought back to the SGC base from a dead world. The strange device infects Jack O'Neill with an alien organism which soon begins to spread. When Carter's attempts to halt its rapid growth fail, Daniel Jackson realizes that the only chance to save Jack is to let the organism control him in order to communicate.

1.08 The Nox

When a planned ambush against Apophis goes disastrously wrong, resulting in fatalities among the SG-1 team, the peace-loving Nox restore them to life. But while these gentle people can bring back the dead, can they resist the deadly technology of Apophis and his Jaffa? The attempts of SG-1 to defend the Nox make matters worse.

2.08 Family

Teal'c's son, Rya'c, is kidnapped by and brainwashed by Apophis and led by Master Bra'tac, the SG-1 team travel to Chulak to save him. They are shocked to discover a world turned completely upside down. And when Rya'c is recovered he denounces his father and helps to capture the team, forever preventing their return to Earth.

1.09 Brief Candle

On the mysterious planet Argos, the beautiful Kynthia seduces Jack O'Neill into marriage. As a result of their liaison, Jack is condemned to an Argosian lifespan of only a hundred days. As he ages rapidly and his health fails, will his team succeed in their frantic search for a cure? Jack's bitterness changes the peaceful Argosians forever.

2.09 Secrets

The entire Stargate project is threatened when a reporter declares he will reveal to the world the mysteries of the top-secret portal. Jack O'Neill attempts to stop him while Sam Carter discovers that her estranged father is dying of cancer. On Abydos, Teal'c and Daniel Jackson find Sha're, pregnant with the child of Apophis and Amaunet.

1.10 Thor's Hammer

Looking for allies against the Goa'uld, the SG-1 team gates through to Cimmeria, home of the legendary Norse gods. Teal'c and Jack O'Neill are transported to the underground labyrinth caves of the vicious creature Unas. Can Daniel Jackson and Carter rescue them? They must enlist the aid of the fearful Kendra, once host to a Goa'uld.

2.10 Bane

During an attack by giant insects, Teal'c is stung and implanted with a virus that causes him mutate into a terrifying and destructive creature. Taken by Col. Maybourne and the NID for experimentation, Teal'c escapes and finds refuge in the city, where Ally, a streetwise young girl, tries to help him. For Teal'c, time is running out.

1.11 The Torment Of Tantalus

Daniel Jackson discovers that in 1945, a brilliant young professor went through the Stargate, never to return. Together with his fiancee, Catherine Langford, SG-1 discovers the now aged Ernest Littlefield trapped in a decaying castle. With Daniel captivated by Ernest's amazing discoveries, the others race against time to get them all home.

2.11 The Tok'ra Part 1

Carter is mesmerized by a dream in which she sees herself as Jolinar, the rebel Goa'uld who briefly inhabited her body. The SG-1 team travel to a desert world where they find the Tok'ra, who fight against the tyranny of their fellow Goa'uld. SG-1 are imprisoned for their own safety and Carter's dream turns into a nightmare when she learns her father is near death.

1.12 Bloodlines

With the proviso that they bring back a Goa'uld larva for study, Teal'c returns with the SG-1 team to Chulak to stop the Goa'uld from enslaving his son Ry'ac. After a difficult reunion with Drey'auc, the wife he abandoned, Teal'c discovers that his son is dying. He needs the healing properties of a larval Goa'uld and the only one available is Teal'c's own.

2.12 The Tok'ra Part 2

With the oldest and wisest of the Tok'ra dying and any hope of an alliance dying with her, Sam Carter comes up with a daring plan. If her father Jacob becomes host to Selmak, both will be saved. Hosts are the one thing Earth can offer the suspicious Tok'ra. As Jacob and Selmak make their choice to blend, the base is attacked by the Goa'uld.

1.13 Fire And Water

The SG-1 team is transported to Oannes, a planet of opposites, the home of the sole survivor on an ancient aquatic race. Teal'c, Jack and Carter return to Earth shell-shocked at their loss of Daniel Jackson. The grieving team members are confused, unable to let go of Daniel. Can they discover their true memories in time to rescue Daniel?

2.13 Spirits

When the SG-11 team does not return from its mission, Hammond attempts contact and Jack O'Neill is injured. Carter leads the SG-1 team through the Stargate to find SG-11 and negotiate with the mystical natives for a precious mineral. After they are captured, the team are led by the friendly Tonane to the great spirits of his people.

1.14 Hathor

The evil and beautiful Goa'uld Hathor escapes from stasis in a Mayan pyramid in Mexico. At the Stargate facility, she uses her charms and a powerful drug to seduce men into her service as she plots to take over the world. With Daniel as her Beloved Pharaoh and Jack her intended First Prime, can Carter and the female personnel stop her in time?

2.14 Touchstone

A climate-controlling device is stolen from the planet Madrona and the SG-1 team is accused of the theft. Whoever took the device has the ability to disrupt Earth's climate. With Madrona wracked by storms, Jack and Daniel find a second Stargate active on Earth and the team's investigations take them to Area 51, the NID and Col. Maybourne.

1.15 Singularity

Sam Carter returns with the sole survivor of a planetary plague—a little girl, Cassandra. As they become attached, Carter, Dr. Fraiser and Daniel discover the girl's terrible secret—a time-bomb implanted by the Goa'uld Nirrti to destroy the Stargate on Earth. Can Carter save Cassandra or will she share her fate?

2.15 A Matter Of Time

A black hole swallows up the SG-10 team before the SGC's eyes. The black hole's gravitational pull grows stronger, threatening to destroy Earth through its Stargate. While Carter struggles to find a solution, Jack O'Neill is forced to reunite with an old Special Ops antagonist in a desperate attempt to close off Earth's Stargate.

1.16 Cor-ai

O'Neill and the team travel to Cartago, where Teal'c is recognized as once having been First Prime to Apophis, who 'harvested' hosts from this world many times. His guilt already decided, Teal'c is arrested for the murder of Hanno's father and put on trial for his life. While Jack and Carter attempt to get help from the SGC, Daniel battles Hanno in Cor-Ai.

2.16 The Fifth Race

When Jack O'Neill gazes into a mysterious alien viewing device, his brain is infiltrated by a strange intelligent force. Daniel Jackson is sure that the dying, increasingly isolated Jack now understands the mysteries and origins of the Stargate. As Jack's only means to communicate, can Daniel recover the information and save his friend's life?

1.17 Enigma

The SG-1 team rescues a group of highly developed survivors from the cataclysmic planet of Tollan. To stop the legendary knowledge of the Tollan people from falling into the wrong hands, O'Neill and his team stake all on the cross-universal rescue.

2.17 Serpent's Song

The SG-1 team's mortal enemy, Apophis, is being hunted by the enigmatic Goa'uld Sokar and throws himself at Jack O'Neill's mercy. Tortured and close to death, Apophis proposes a deal: revealing all he knows about the Goa'uld in return for a new host body. For Daniel Jackson, Teal'c and the others, this is a deal with the devil.

1.18 Solitudes

Following a Stargate technical defect, O'Neill and Carter find themselves stranded on an icy wasteland. O'Neill is severely wounded, both are freezing to death, and nobody can find the section of the universe in which they are stranded.

2.18 Holiday

The alien Ma'chello traps Daniel Jackson with his body-swapping invention, steals Daniel's body and escapes to Earth. As Daniel lays dying in Ma'chello's ailing body, Jack and Teal'c attempt to help him, but they end up swapping bodies, too. Can they find Ma'chello and convince him to return to his own body in time to save Daniel?

1.19 Tin Man

Upon landing on Planet PX3-989, the mysterious alien Harlan renders the SG-1 team unconscious. After waking and returning to the SGC, they find that their spirits and minds have been transferred into the bodies of androids. Their energy literally failing, the team must return to Harlan in a bid to reunite body and soul.

2.19 One False Step

On a routine reconnaissance mission, the SG-1 team discover a civilization of friendly, innocent aliens, but suddenly the aliens begin to fall ill. A plague, somehow caused by the team, sweeps across the planet and Jack O'Neill and Daniel Jackson are infected too. Can the team save themselves and an entire civilization?

1.20 There But For The Grace Of God

A mysterious mirror transports Daniel Jackson to another dimension. Suddenly he finds himself on an alternate Earth under attack from the Goa'uld, his place at the SGC filled by Catherine Langford and Dr. Sam Carter. Daniel foresees that the same fate awaits Earth in his reality. Can he return home in time to save the world?

2.20 Show And Tell

A young boy mysteriously appears at Stargate Command and pleads for help, claiming that the Goa'uld are chasing him to find his race of invisible beings. But the SG-1 team is duped as the invisible aliens actually plan to destroy the Goa'uld by eradicating all potential human hosts--and the invasion of Earth has already begun.

1.21 Politics

Only Daniel Jackson knows of the Goa'uld plans to invade Earth. Despite the injury he sustained in escaping the other reality, no one takes his warnings seriously, not even Jack and his friends on SG-1. The adversarial Senator Kinsey has chosen to terminate the costly Stargate Program and close the gate forever just as Earth faces its worst threat.

2.21 1969

A solar flare sends the SG-1 team back in time to 1969 where the US military command suspects them of espionage. With the help of Lt. George Hammond, Jack O'Neill and his team escape and are aided by two flower children on their way to Woodstock. Can they ever return to the present again? The answer lies in a solar flare.

1.22 Within The Serpent's Grasp Part 1

Convinced at last by Daniel to take the threat seriously, Jack leads SG-1 into disobeying orders as they gate off-world to the coordinates Daniel brought back from the alternate reality. The team find themselves amidst preparations by Apophis and Klorel for an all-out strike on Earth. Can they avert disaster and save Earth?

2.22 Out Of Mind Part 1

Jack O'Neill awakens in a futuristic world to be told he's been frozen for 79 years and that all his friends are dead. He is questioned about the Stargate Program but then is shocked to discover it's a set-up. He finds Daniel Jackson and Carter and attempts escape from the Goa'uld stronghold, only to be thwarted by the return of an old enemy, Hathor.

Season Three

3.01 Into The Fire Part 2

Hathor captures O'Neill and implants him with a Goa'uld symbiote that could eventually kill him. Meanwhile, O'Neill's rescue party is defeated by Hathor's invincible energy barrier, and time is running out. Is there any way to save O'Neill?

Season Four

4.01 Small Victories Part 2

SG-1 is called upon to help a race of gentle, highly intelligent aliens struggling against a swarm of ravenous, deadly mechanical spiders called replicators. But the situation becomes much more complicated when a lone replicator is discovered in the most unlikely of places…back home on Planet Earth!

3.02 Seth

When SG-1 hunts for a Goa'uld lord living on Earth, they discover this powerful alien in the form of a religious leader with a heavily armed cult following. O'Neill faces off with both government agents and the cult in a fiery clash that may destroy them all.

4.02 The Other Side

SG-1 responds to a cry for help from a doomed civilization, which promises to give Earthlings access to highly advanced technology in exchange for supplies that would help them defeat their enemies. But the team soon discovers a shocking secret that may prove that SG-1 is doing a lot more harm than good!

3.03 Fair Game

O'Neill attempts to stop a Goa'uld invasion of Earth. But to call off the attack, the Goa'uld lords demand the destruction of the Stargate. O'Neill doesn't trust them—but the fate of Earth lies in the balance.

4.03 Upgrades

SG-1 is selected to test the effects of alien tech military wristbands on human wearers, and soon find themselves blessed with spectacular strength and speed. But when they are sent on a mission utilizing these new abilities, they learn a shocking lesson about the downside of power.

3.04 Legacy

After Daniel begins to experience hallucinations, SGC doctors suspect that the number of trips through the Stargate may be limited. Daniel insists that something went wrong on SG-1's last mission, but no one believes him. With his condition worsening, will Daniel be able to convince them before he is permanently committed to a mental hospital?

4.04 Crossroads

When a beautiful high priestess from the planet Chulak claims to have a plan that would seriously cripple the Goa'uld, everyone is understandably skeptical. SG-1 must join forces with the Tok'ra in order to put her plan into effect, but a deadly, hidden secret could jeopardize the entire operation!

3.05 Learning Curve

As part of an exchange program with the planet Orban, O'Neill travels to Earth with an alien girl who possesses incredible technical knowledge. But by the time O'Neill discovers the truth behind the child's superior mind…it may be too late for them all.

4.05 Divide And Conquer

When an SGC soldier under the influence of a Goa'uld mind control device attempts to assassinate a High Council member, SG-1 must uncover other potential assassins—even amongst themselves—before the president arrives for a crucial summit meeting.

3.06 Point Of View

Alternate reality versions of Carter and Kawalsky are found in Area 51. Brought to Stargate Command, they start to deteriorate. However, return to their own reality means certain death, as their world has been invaded by Goa'ulds.

4.06 Window Of Opportunity

After SG-1 visits a strange planet in the middle of a geomagnetic storm, they find themselves repeating the same day over and over again. The team must utilize their accumulated knowledge to stop the time loop before there are disastrous consequences across the universe.

3.07 Deadman Switch

SG-1 is captured by Aris Boch, a bounty hunter chasing an evil Goa'uld named Kel'tar. He offers them freedom in exchange for their help. They agree, only to find that Kel'tar is in fact a Tok'ra, whose capture would endanger countless others.

4.07 Watergate

SG-1 joins forces with a beautiful Russian scientist to investigate a rogue Stargate in Siberia, linked to a mysterious water planet. The team must venture via submarine to the water planet, where they encounter an unexpectedly terrifying alien precense that just might destroy them all.

3.08 Demons

SG-1 encounters a medieval civilization and frees a woman tied to a stake as a sacrifice to a demon. With the woman freed, the demon vows to destroy the village unless the SG-1 team is offered up in appeasement.

4.08 The First Ones

During an archaeological survey of fossils on a Goa'uld planet, Daniel Jackson is abducted by a fearsome humanoid creature, prompting SG-1 to embark on a mission to free him from his alien captor. But Daniel soon learns that the creature's intentions are not at all what he thought.

3.09 Rules Of Engagement

SG-1 lands in the middle of a blazing battle between Stargate soldiers and a Jaffa army. Believing the soldiers to be the missing-in-action SG-11 team, O'Neill and other others provide assistance…until the mystery team turns its weapons on SG-1.

4.09 Scorched Earth

After relocating an endangered civilization to a "safe" new planet, the team realizes that another race of aliens is planning to incinerate the planet's surface to make it inhabitable for their own race. Will SG-1 be able to reason with the marauding aliens, or will their plans for interplanetary diplomacy go up in flames?

3.10 Forever In A Day

During a rescue of captured Abydonians, Daniel finds his missing wife, Sha're. But instead of greeting him, she attacks him—leading to her death at the hands of Teal'c. Distraught over her death and angry at Teal'c, Daniel quits Stargate Command.

4.10 Beneath The Surface

With their memories erased and their identities changed, SG-1 find themselves trapped below a domed city on a planet of ice, toiling as slave laborers. Can they come to their senses and make a break for the surface, or will they remain enslaved underground for the rest of their lives?

3.11 Past And Present

SG-1 encounters an entire planet suffering from amnesia. The planet's leader, a woman named Ke'ra, returns to Earth with SG-1 to find a cure. But even as Ke'ra and Daniel develop a mutual attraction, SG-1 suspects she may not be who she appears to be.

4.11 Point Of No Return

When a quirky conspiracy theorist contacts SG-1 claiming to know classified information about the Stargate, at first they think he's bluffing. But when they investigate his wild claims, they realize he's a lot closer to the truth than they thought…and has a few more shocking surprises up his sleeve.

3.12 Jolinar's Memories Part 1

Carter's father has been captured on a moon transformed into a literal hell. As no one has ever escaped from hell except for Jolinar, Tok'ra technology is used to access Jolinar's memories from Carter's mind…but not before an old foe shows up to foil the rescue mission.

4.12 Tangent

When O'Neill and Teal'c take an SGC-modified Goa'uld glider out for a test flight, they lose control and are sucked deep into outer space by a Goa'uld tracking device. It's up to the rest of the team to figure out a way to rescue them, before they run out of oxygen and life support and are lost in space forever.

3.13 The Devil You Know Part 2

During an attempt to rescue Carter's father, SG-1 is caught by one of hell's denizens, determined to use the information they possess to overthrow the Goa'uld lord Sokar. Using Tok'ra technology, the team is forced to relive painful memories…but how much torture can they take?

4.13 Serpent's Venom

SG-1 travels to a remote interplanetary minefield to sabotage a hazardous alliance between two powerful Goa'uld System Lords. But their mission becomes far more dangerous when they realize Teal'c has been captured by one of the Lords, who plans to use him as a pawn in their evil negotiations.

3.14 Foothold

During routine medical exams, Dr. Fraiser injects each team member with a sedative, rendering them unconscious. Teal'c awakens and sees General Hammond conspiring with Fraiser and two aliens. What has happened at Stargate Command, and can SG-1 overpower its own "allies"?

4.14 The Curse

When Daniel Jackson returns to Chicago to attend the funeral of his mentor, a celebrated archaeologist, he soon realizes that the death is mysteriously connected to the recent discovery of a 10,000-year-old Egyptian artifact that might be cursed by a vengeful pharaoh.

3.15 Pretense

When SG-1 is invited to the Tollan planet to attend a ceremony called a "Triad," they are shocked to discover it is actually a trial to determine the fate of their old friend Skaara. Daniel and O'Neill must argue a case against a mysterious Goa'uld named Zipacna to save Skaara's personality.

4.15 Chain Reaction

When SGC commander General Hammond steps down saying he's "too old for the job," SG-1 immediately suspects foul play. And when a hard-nosed new general steps in to replace him and splits up SG-1, they vow to solve the mystery and get their beloved General Hammond back at the helm.

3.16 Urgo

En route to a paradise planet, SG-1 is secretly implanted with an alien spore that evolves into a being called Urgo. Though Urgo claims to be friendly, the suspicious team members work feverishly to rid themselves of the creature before it destroys their minds.

4.16 2010

A decade in the future, Earth's alliance with a highly intelligent race of aliens has rendered SGC obsolete. But when Carter, now married to a human ambassador to the aliens, uncovers a terrifying secret about these "benevolent" beings, she must reassemble SG-1 to send an urgent message to the past.

3.17 A Hundred Days

SG-1 visits the friendly planet Edora and gathers to watch the annual meteor show that lights up the sky like a fiery rain. But suddenly, wayward asteroids bombard the planet, destroying the Stargate. Can O'Neill and the team ever return home?

4.17 Absolute Power

When a "chosen" boy found on the planet Abydos is brought to SGC, he sends a telepathic message, causing Daniel Jackson's personality to undergo disturbing changes. Will the rest of SG-1 be able to solve the mystery of the boy's origin before Jackson becomes a power-hungry warmonger?

3.18 Shades Of Grey

On a mission to Tollana, O'Neill steals a weapon and takes it back to Earth. When Hammond discovers the deception, he suspends O'Neill. But O'Neill's misconduct is only the beginning of a mystery that could have catastrophic consequences.

4.18 The Light

SG-1 travels to a planet to investigate a machine that induces narcotic pleasure. But when they try to leave the planet, they are overcome with debilitating withdrawal symptoms, forcing them to stay. Can they free themselves from this addiction before it consumes them utterly?

3.19 New Ground

Three quarters of SG-1 are captured upon arrival to a planet in the midst of a religious war. While Carter, Daniel, and O'Neill are tortured for information as they try to convince their Bedrosian captors they're not enemy spies, an injured Teal'c gets help from a Bedrosian scientist who may have his own agenda.

4.19 Prodigy

Carter takes a brilliant young cadet under her wing on a mission to a remote planet inhabited by unique electric beings that resemble a swarm of fireflies. But when the creatures suddenly turn aggressive, SG-1 will need the cadet's brainpower to help them escape with their lives.

3.20 Maternal Instinct

Bra'tac arrives at Stargate Command with a wild story about interplanetary warfare with Apophis. Daniel deduces that the battle is over Apophis' child, Harsesis, and races to save the child before Apophis finds him first.

4.20 Entity

When SG-1 sends a probe through the Stargate, a powerful electronic impulse comes back through the wormhole and hides inside SGC's computer. But when this electronic entity suddenly jumps inside Carter's mind, SG-1 must choose between saving SGC and saving Carter's life.

3.21 Crystal Skull

Daniel finds a glowing crystal skull identical to one first discovered by his grandfather decades before. When Daniel stares into the skull's eyes, a mysterious force makes him disappear. Now SG-1 must find Daniel's grandfather to unlock the mystery of the skull and bring Daniel back.

4.21 Double Jeopardy

SG-1 encounters a tricky situation when they join forces with androids designed to look exactly like them in a battle against an evil Goa'uld System Lord. Can they fight alongside robotic doppelgangers, or will confusion and contradiction blur the line between man and machine?

3.22 Nemesis Part 1

O'Neill is kidnapped by the Asgard and taken aboard a ship, where he encounters a swarm of metallic, buglike creatures on a mission to destroy Earth. O'Neill plans to blow up the ship and sacrifice himself, but can the Stargate team find another way to stop this apocalyptic scheme?

4.22 Exodus Part 1

SG-1 joins forces with the Tok'ra in a final attempt to rid the universe of their mutual Goa'uld nemesis, Apophis. But their plan goes awry when a beloved member of their team is captured and they find themselves at the mercy of their most powerful and feared enemy.

Season Five

5.01 Enemies Part 2

Barely escaping a destructive supernova, SG-1 is surprised to learn that Teal'c also survived and is now under the mind control of the maniacal Apophis. Will SG-1 be able to rescue Teal'c from the clutches of Apophis or will they perish trying?

Season Six

6.01 Redemption Part 1

SG-1 faces two potential disasters light years apart as an energy build-up in the Stargate threatens to destroy Earth, and Teal'c returns home to find his wife dead, his son estranged, and his planet under attack.

5.02 Threshold

Teal'c may have been rescued from the evil Apophis but his mind remains loyal to his old master. Bra'tac suggests an ancient Jaffa ritual called M'al Sharran, a process which could bring Teal'c back to his senses…or end his life!

6.02 Redemption Part 2

As Teal'c and his son battle to save Earth, O'Neill pilots the X-302, a newly designed interstellar spacecraft that will carry the Stargate far away from Earth so it can explode harmlessly in deep space. But how will SG-1 operate without the Stargate?

5.03 Ascension

While investigating an alien device, Carter is found unconscious. Resting from suspected exhaustion, she is visited by an invisible being who holds vital secrets to the device and the catastrophe it may cause.

6.03 Descent

SG-1 investigates an abandoned Goa'uld ship orbiting Earth. While they try to salvage the ship, saboteurs attack and the vessel plummets to Earth, deep into the ocean, with O'Neill and his crew trapped inside…and time running out!

5.04 The Fifth Man

O'Neill stays behind on an alien world to tend to the wounded Lt. Tyler, the latest member of SG-1. But when the rest of the team returns to the command center, they discover that Lt. Tyler doesn't exist! Will this latest case of alien mind games close SGC down for good?

6.04 Frozen

A frozen female alien that might predate human evolution by 50 million years is discovered in Antarctica. She might, in fact, be part of the race that invented the Stargate. After SG-1 manages to thaw her back to life, they discover she may be the source of a deadly virus.

5.05 Red Sky

SG-1 is welcomed on K'Tau by the planet's religious leader, who takes the reddening sky concurrent with their arrival as a sign from their gods. What he doesn't know is that the reddish color is a reaction caused by the wormhole, signaling the planet's impending doom!

6.05 Nightwalkers

When a scientist working on stem cell research disappears, Carter, Teal'c, and Quinn investigate and discover that the scientist's town is infested with Goa'uld who can only control the townspeople by night. Will Carter, Teal'c, and Quinn be taken over next?

5.06 Rite Of Passage

On the eve of her birthday, Cassandra is showing signs of "mind fire," a powerful electromagnetic field triggered at puberty. Now SG-1 must find a cure to stop the life-threatening changes before she destroys herself…and the command center!

5.07 Beast Of Burden

Daniel's Unas friend, Chaka, is captured by a preindustrial civilization that uses Unas as slaves. While attempting to free Chaka from this cruel regime, Daniel risks the safety of SG-1, and possibly the life of his friend.

6.07 Shadow Play

Quinn is conflicted when an old professor from his home planet asks SG-1 to help stage a coup against the Kelownan government in order to stop a civil war. Should SG-1 allow the planet to destroy itself…or are they placing themselves in needless danger?

5.08 The Tomb

On a rescue mission to recover Russian solders believed missing in action on a previously undisclosed trip, SG-1 gets trapped in a Goa'uld tomb with a number of decomposed bodies…and a deadly alien monster with an appetite for human flesh!

6.08 The Other Guys

Two bumbling scientists working on an off-world research project witness SG-1 captured in a Goa'uld raid and, defying orders, attempt to rescue them. Little do they know that SG-1 staged the capture in order to infiltrate the Goa'uld and make contact with a Tok'ra informant.

5.09 Between Two Fires

The SG-1 team is surprised to discover that the advanced Tollans have reversed their policy on sharing technology and are now willing to trade advanced weaponry with Earth. But the deal seems too good to be true when SG-1 learns of the Goa'uld's involvement.

6.09 Allegiance

Fleeing a Goa'uld attack, the Tok'ra take refuge at the SGC Alpha Site, occupied by rebel Jaffa. Centuries of bad blood between the two races boils as an unseen assassin wreaks havoc on the camp. Can O'Neill stop the bloodshed before the assassin escapes with the Alpha Site's coordinates?

5.10 2001

SG-1 meets an advanced race who are finally willing to share their technology freely with Earth, but as negotiations continue, the team and Hammond have reason to doubt whether Aschen are all that they seem.

6.10 Cure

SG-1 visits Pangar, a planet inhabited by humans who have developed a drug that makes their immune systems perfect. Unknown to SG-1 is the means by which the drug is produced, a startling discovery that may hold the key to the origins of the Tok'ra!

6.11 Prometheus

Rogue NID officers hijack the X-303 spaceship with Carter and Jonas on board, demanding Adrian Conrad be brought to the ship. Using his Goa'uld knowledge, Conrad activates the X-303 and takes it light-years from Earth as O'Neill and Teal'c stage a daring rescue.

5.12 Wormhole X-Treme

A mysterious ship is hurtling toward Earth and the key to stopping it lies with Marty, the alien who is producing a new sci-fi TV series called "Wormhole X-Treme!" But due to his amnesia, Marty has forgotten not only how to stop the ship…but also that he lived through the "Wormhole" experience himself.

6.12 Unnatural Selection

When SG-1 is marooned in deep space, Thor and the Asgard come to the rescue. They then seek O'Neill's help to combat the Replicators who have overrun their home world. Convinced they will attack Earth if not stopped, O'Neill stages a daring mission to stop the Replicators once and for all.

5.13 Proving Ground

Col. Jack O'Neill and his new SG recruits have become the targets of a secret hostile takeover. Now it's up to a wounded O'Neill and his neophyte troop to save the command center from a possible alien invasion!

6.13 Sight Unseen

SG-1 returns from a mission with an ancient artifact that triggers the ability to see hideous yet harmless life forms in a parallel reality. As the effect spreads to civilians, O'Neill and his team must find a solution before mass hysteria breaks out.

5.14 48 Hours

During a near-fatal pursuit by the Goa'uld gliders, Teal'c fails to make it through the Stargate before it is destroyed. Now SG-1 has only 48 hours to reestablish Teal'c's energy signature from the temporary memory of the Stargate before it's erased…for good!

6.14 Smoke And Mirrors

Senator Kinsey suffers an assassination attempt while campaigning for the presidency, and O'Neill is caught on tape leaving the building where the shots were fired. With O'Neill behind bars, Carter, Teal'c and Jonas must prove his innocence before it's too late.

5.15 Summit Part 1

A truce has been declared among the Goa'uld, so that the warlords can attend a summit on the future of universe domination. Since Jackson speaks fluent Goa'uld, he is sent to the summit disguised as an aide. But his real mission is to poison the delegates!

6.15 Paradise Lost

Colonel Maybourne visits O'Neill and claims to have a key to a cache of alien technology, but demands a presidential pardon for his crimes in exchange for the knowledge. When SG-1 accompanies Maybourne to retrieve the cache, they find that his intentions may not be all they seem.

5.16 Last Stand Part 2

Embattled and under siege, SG-1 attempts to escape a Goa'uld search and destroy mission bent on finding them and the secret crystal they carry. Meanwhile, the balance of life is threatened by the reappearance of Anubis—the oldest and most evil System Lord.

6.16 Metamorphosis

SG-1 discovers that Nirrti, attempting to create the perfect human host, is mutating the inhabitants of an unexplored planet with a machine that rearranges their DNA. Captured by Nirrti, SG-1 must find a way to escape before they're subjected to the same fate.

5.17 Failsafe

As an asteroid hurtles toward Earth, SG-1 uses an abandoned Goa'uld ship as a launch pad for a megabomb that's designed to explode the rock before impact. But when SGC loses the ship's signal, it's feared that the team is dead and Earth is in devastating peril.

6.17 Disclosure

General Hammond and the Pentagon are forced to reveal the existence of the Stargate to other world governments. Playing off fears the US military has too much control, Senator Kinsey suggests that Hammond be relieved of command and the civilian-run NID oversee the Stargate program.

5.18 The Warrior

Kytano, former First Prime of the late Imhotep, is now the leader of a powerful Jaffa rebellion. SG-1 visits Kytano's stronghold with the aim of securing an alliance. But O'Neill and the team soon learn that this strategic partnership may well come at a hefty price.

6.18 Forsaken

Exploring an off-world planet, SG-1 discovers a crashed ship and three human survivors who claim to be under constant attack by hostile aliens. While Carter helps repair the ship's computer, she learns that the survivors are hiding a secret…and things may not be all they seem.

5.19 Menace

A dormant female android discovered on a barren planet is transported back to Earth for study. On reactivation, she exhibits a childlike innocence. But soon, SG-1 discovers that this seemingly innocent being may hold a dangerous secret.

6.19 Changeling

Teal'c mysteriously begins to lose his sense of reality, haunted by visions of an alternate existence where he is a normal human being. As his paranoia deepens, Teal'c must rely on the help and comfort of his old friend Daniel Jackson to determine where his dreams end…and his reality begins.

5.20 The Sentinel

O'Neill must enlist the aid of a couple of convicted felons in a bid to save a planet from the Goa'uld. With an attack looming and the planet's automated defense systems seemingly offline, an entire world's salvation rests in the hands of SG-1 and two former NID operatives.

6.20 Memento

SG-1 are aboard the X-303 on its maiden voyage into deep space. When it suddenly drops out of hyperspace, they're left stranded. Their only option is a nearby planet where a Stargate might be located, but O'Neill must first convince its people they come in peace.

5.21 Meridian

Exposed to a lethal dose of radiation, Jackson has just hours to live. SG-1 tries everything in its power to save him, but as the hours tick away, Jackson's spirit meets with each member individually to discuss his next mission: life after death.

6.21 Prophecy

On a routine mission, SG-1 meet a civilian desperate to be freed from the clutches of a Goa'uld while Jonas falls ill and is suspended from active duty. He is diagnosed with a brain tumor, which gives him the ability to glimpse the future…a future where SG-1 are walking into a trap.

5.22 Revelations

Still dealing with the death of one of their own, SG-1 must put its mourning aside in order to confront the warlord Anubis—who has captured the Asgard leader Thor so he can extract the secrets of their ancient technology for universal domination.

6.22 Full Circle

Daniel Jackson appears to O'Neill and alerts him that Anubis has located the Eye of Ra, a fabled object of power hidden somewhere on Abydos. With Daniel's help, SG-1 find the Eye first. But, determined to have its power, Anubis threatens to destroy Abydos unless Daniel and SG-1 give him the Eye.

Season Seven

7.01 Fallen Part 1

When SG-1 explore a planet they think is a site of the Ancients, they are stunned to discover Daniel Jackson living among the natives. Daniel has no memory of his life or of his death and ascension and it is up to Jack, Sam and Teal'c to convince him to return with them to the SGC and help him regain his memories. It isn't long, though, before the Tok'ra need their help against Anubis.

Season Eight

7.02 Homecoming Part 2

Jonas' planet comes under attack from Anubis, forcing Teal'c to parlay with Lord Yu while Jack and Sam reluctantly return to Kelowna to deal with the politicians and military there while Daniel and Jonas Quinn have the most dangerous mission of all, in a covert operation aboard Anubis' ship itself. With Jonas a prisoner, Daniel is left alone to free him from Anubis.

7.03 Fragile Balance

A young boy turns up at the SGC claiming to be Jack O'Neill, fully expecting his amused teammates to do something about him waking up thirty years younger. Young Jack is soon discovered to be a clone while the real O'Neill has been abducted by a rogue Asgard. Young Jack is dying and desperate enough to launch a last-ditch attempt to trap the Asgard, Loki.

7.04 Orpheus

Teal'c's dependence on Tretonin is changing him in ways he didn't expect and he is struggling with his identity as a Jaffa. Daniel is also struggling to come to terms with his descension. Sharing Kel'No'Reem with Teal'c, Daniel has a vision of Teal'c's son Rya'c and mentor Bra'tac trapped in a Jaffa death camp and realizes he did nothing to help them.

7.05 Revisions

The team encounters a planet with a society that has lived for centuries within a computer-controlled environment within a bubble. Outside, the rest of the world is a toxic wasteland. SG-1 offer the inhabitants relocation but they are strangely reluctant to move when everything they need is provided to them via their link to the computer core.

7.06 Lifeboat

An entire world has been lost, the few survivors frozen and their personalities stored in databases in ships. When one ship crashes, the intelligences become desperate as power fails. When their bodies are destroyed, they invade Daniel Jackson's mind against his will and force him to become their 'lifeboat'. Can Janet and SG-1 save Daniel?

7.07 Enemy Mine

SG-1 are called upon to assist when a member of an SGC mining team goes missing in mysterious circumstances. Daniel and Teal'c find a familiar bony necklace which they recognize as the kind worn by Chaka. Daniel is convinced that there are Unas on the planet and he determines that the mining team is being warned to stay away.

7.08 Space Race

An enthusiastic Carter uses a valuable naquadah generator to finagle herself into an alien space race with pilot Warrick. There's a huge contract riding on winning and a conspiracy to rig the race leads to Teal'c being abducted. While O'Neill and Daniel negotiate with the local dignitaries, in the space race Carter faces battle droids, flying into a sun, navigating an asteroid belt, sabotage and hostages!

7.09 Avenger 2.0

With Daniel co-ordinating a risky relocation project on a planet rocked by seismic tremors while Jack and Teal'c attempt to make peace among warring Jaffa factions, Carter and Dr. Felger work on a virus that will scramble the established settings of a DHD, rendering a specific gate useless. It seems a brilliant plan until Ba'al proves himself to be the better hacker.

7.10 Birthright

SG-1 discover a clan of fierce, skilled female Jaffa warriors struggling to survive. They need access to symbiotes to keep themselves alive, but Carter offers their leade Ishta an alternative in the new drug Tretonin. Carter escorts a group of volunteers to the SGC to test the drug, Daniel tries to help young warrior Nesa find her way while Ishta and Teal'c find they have much in common.

7.11 Evolution Part 1

Daniel is leading a team on the search for an ancient ruin and a mysterious artefact in the jungles of Honduras when they are kidnapped. Jack goes to Daniel's rescue, aided in his search by Burke, an eccentric, disgraced CIA agent who was once Jack's close friend. Meanwhile Carter, Teal'c and Jacob battle a new enemy - 'SuperSoldiers' engineered by Anubis.

7.12 Evolution Part 2

Daniel is leading a team on a search for an ancient ruin and a mysterious artefact in the jungles of Honduras when they are kidnapped. Jack goes to Daniel's rescue, aided in his search by Burke, an eccentric, disgraced CIA agent who was once Jack's close friend. Meanwhile Carter, Teal'c and Jacob battle a new enemy - 'SuperSoldiers' engineered by Anubis.

7.13 Grace

Carter is aboard the Prometheus as the ship comes under attack. She awakens to find the crew is gone and the ship is trapped in a gas cloud. Her attempts to save the ship and find the crew are hampered by her head injury, but her teammates, her father, and a little girl named Grace appear to her, helping her to save the ship and crew as well as face up to the choices she has made in her life.

7.14 Fallout

The SGC is contacted by Jonas Quinn, who declares that Kelowna's naquadah deposits are converting into naquadria in the planet's core, threatening an explosion that would destroy all life. At the SGC, Daniel and Jack must help settle diplomatic troubles preventing an evacuation of the planet, while Carter and Teal'c go with Jonas to find a way to prevent the explosion.

7.15 Chimera

Daniel is exhausted by strange dreams of his past with Sarah Gardner, an altered past in which she urges him to find the Lost City. Meanwhile, Carter begins a romantic relationship with detective Pete Shanahan, who is very curious about the Air Force work she won't discuss. When SG-1 realise that Daniel's dreams are being manipulated, Pete is put on a collision course with Osiris.

7.16 Death Knell

When the Alpha Site is attacked by one of the SuperSoldiers, Sam Carter is caught in the crossfire. Tensions are high between Tok'ra and Jaffa and it appears one group sold out. While Daniel, Hammond and Jacob struggle with the two warring factions in their search for the traitor, Jack and Teal'c search the Alpha Site for Carter, missing in action since the attack.

7.17 Heroes Part 1

A documentary crew arrives to film the SGC for posterity. Hammond cooperates only reluctantly and prevents the crew from filming ongoing operations. Instead they conduct rather awkward interviews with SG-1 and other SGC personnel. Meanwhile, SG-13 runs into trouble on a survey mission, and one of their men is injured, causing the SGC to mobilize a rescue.

7.18 Heroes Part 2

While the documentary crew continues its efforts, SG-1 and Dr. Fraiser join the rescue of SG-13. As the teams return, it's clear something has gone horribly wrong. The NID begins investigating as the documentary director tries to learn what happened, and what part of it Daniel may have caught on tape. The tragic truth is finally revealed, and the SGC is changed forever.

7.19 Resurrection

Carter, Daniel, and Teal'c meet Agent Barrett in Los Angeles at the scene of a massacre. The site is the secret lab of a rogue NID cell, and the scientists there have successfully created a human/Goa'uld hybrid in the form of a young woman. The team's desire to help the woman must be traded against the need to disarm a Goa'uld bomb that threatens all of Orange County.

7.20 Inauguration

On his first day in office, President Hayes is briefed on the Stargate program. Vice President Kinsey immediately tries to convince the President to replace General Hammond and SG-1, assisted by investigator Richard Woolsey. The two try to persuade Hayes that SG-1 is not to be trusted. Woolsey has a change of heart about Kinsey and backtracks with the President, who remains noncommittal.

7.21 Lost City Part 1

In pursuit of the Lost City, Daniel leads SG-1 to an Ancient repository. Under fire from Anubis, Jack again takes the download of Ancient knowledge, knowing it's at the cost of his life. President Hayes removes Hammond from command and installs Dr. Elizabeth Weir, a civilian. Bra'tac arrives with news that Anubis and his forces are planning to attack Earth in three days.

7.22 Lost City Part 2

O'Neill uses the Ancient knowledge to lead SG-1 to a distant Ancient outpost. He takes a power supply and leads them back to Earth again, to a similar outpost in Antarctica. With help from Hammond and the Prometheus, Jack repels Anubis' attack, destroying him and his forces. SG-1 are forced to put Jack into a stasis chamber, with no idea how to remove the Ancients' knowledge and save him.